Wheatstone LNG Terminal

Chevron Australia is constructing an LNG plant near Onslow, Western Australia. The associated downstream dredging works were contracted to Dredging International Australia (DIAU). IMDC provided technical assistance during the construction phase of the LNG plant.

The associated downstream dredging works comprised dredging a 17-km approach channel, a swing basin, berth pockets, a tug harbour, and related infrastructure. Total dredging volume exceeds 26 million m³.

IMDC provided on-site assistance to the project environmental team of DIAU from the project award to completion. Environmental assistance consisted of 

  • Writing up project environmental plans and procedures
  • Coordination of environmental team
  • Study of Sediment Plume Behaviour and Impact on Coral Reef Sites
  • Waste and Oil Spill Management
  • Setting up an environmental Measurement Campaign and real-time data gathering, interpretation and reporting
  • Commercial and Contractual interface within DEME team, lead contractor, client and subcontractors
  • Providing EcoPAM operators


  • Client: DEME
  • Start: 2012
  • Completion: 2015